package com.fwmagic.netty;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

import java.util.logging.Logger;

public class TimeClientHandler extends ChannelHandlerAdapter {

	private static final Logger logger = Logger
			.getLogger(TimeClientHandler.class.getName());

	private final ByteBuf firstMessage;
	
	public TimeClientHandler(){
		byte[] req = "QUERY TIME ORDER".getBytes();
		firstMessage = Unpooled.buffer(req.length);
		firstMessage.writeBytes(req);
	}

	@Override
	public void channelActive(ChannelHandlerContext ctx) throws Exception {

		ctx.writeAndFlush(firstMessage);
	}

	@Override
	public void channelRead(ChannelHandlerContext ctx, Object msg)
			throws Exception {
		//读取服务器返回的信息
		ByteBuf buf =(ByteBuf)msg;
		byte[] req = new byte[buf.readableBytes()];
		buf.readBytes(req);
		String body = new String(req,"UTF-8");
		System.out.println("Now is : "+body);
	}

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
			throws Exception {
		//释放资源
		logger.warning("Unexpected exception from downstream : "+cause.getMessage());
		ctx.close();
	}

}
